Why is understanding the deadness of the natural man's heart important for Christians?

The deadness of the natural man's heart is a critical understanding in sovereign grace theology. Scripture teaches that without divine intervention, humanity is spiritually dead in their sin (Ephesians 2:1-3). This reality emphasizes the need for God's regenerating grace to quicken the heart and grant faith. In the sermon, the preacher reflects on how the kings heard of God's miraculous deeds yet hardened their hearts. This illustrates that apart from God's grace, even the clearest revelations of His power can have no effect. Therefore, understanding the condition of the heart highlights our utter dependence on God for salvation and true belief.